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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_001_009_671">&nbsp;</a>NAME</h4><blockquote>
echo, noecho - enable/disable terminal echo
</blockquote><h4><a name = "tag_001_009_672">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="curses.h.html">curses.h</a>&gt;

int echo(void);

int noecho(void);
</code>
</pre>
</blockquote><h4><a name = "tag_001_009_673">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>echo()</i>
function enables Echo mode for the current screen.  The
<i>noecho()</i>
function disables Echo mode for the current screen.  
Initially, curses software echo mode is enabled and hardware 
echo mode of the tty driver is disabled.  
<i>echo()</i>
and
<i>noecho()</i>
control software echo only.  Hardware echo must remain disabled for
the duration of the application, else the behaviour is undefined.
</blockquote><h4><a name = "tag_001_009_674">&nbsp;</a>RETURN VALUE</h4><blockquote>
Upon successful completion, these functions return OK.  Otherwise,
they return ERR.
</blockquote><h4><a name = "tag_001_009_675">&nbsp;</a>ERRORS</h4><blockquote>
No errors are defined.
</blockquote><h4><a name = "tag_001_009_676">&nbsp;</a>SEE ALSO</h4><blockquote>
<xref href=terminalinput><a href="intov.html#tag_001_005">
Input Processing
</a></xref>,
<i><a href="getch.html">getch()</a></i>,
<i><a href="curses.h.html">&lt;curses.h&gt;</a></i>,
<b>XBD</b> specification, <a href="../xbd/termios.html#tag_008_002"><b>Parameters that Can be Set</b>&nbsp;</a> .
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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